10.6 Arrange each set of compounds in order of increasing boiling points. (i) Bromomethane, Bromoform, Chloromethane, Dibromomethane. (ii) 1-Chloropropane, Isopropyl chloride, 1- Chlorobutane.

The order of increasing boiling point is

1. Chloromethane (CH₃Cl)< Bromomethane (CH₃Br) < Dibromomethane (CH₂Br₂)< Bromoform (CHBr₃)
2. Isopropyl chloride (C₃H₇Cl)< 1-Chloropropane (C₃H₇Cl) < 1-Chlorobutane (C₄H₉Cl)

Generally, boiling point increases with the molecular weight of the compound and decreases with the branching of the chain